nhatcherOct 2024Recommends
Derek Muller just did an interesting take on QR codes and their history on his popular channel veritasium: ▶ this video
in “The history of the barcode” · View on HN
I built a QR code with my bare hands to see how it works
I built a QR code with my bare hands to see how it works on HackerTube: recommended by 1 Hacker News commenter across 1 month, 2024–2025.
Veritasium
Open on YouTubeexplainer · evergreen
Veritasium builds a QR code by hand to explain how it works. It covers the history of Morse code and barcodes, how QR codes encode data, why damaged codes still scan, and how safe they are.
Why Hacker News recommends it
HN points to it as a recent, well-made explanation of QR code structure and error correction.
- people recommended it
- 1
- separate months
- 1
- strong recommendations
- 0
- discussed on HN
- 2024–2025
“Derek Muller just did an interesting take on QR codes and their history”
What HN commenters said
3 Hacker News comments link this video. Each one links back to its thread.
gukovJun 2025Cites it
Yep, if I'm using a physical medium like paper I want to allow for some degradation. Here's a Veritasium video on QR codes: ▶ this video
in “Show HN: Qrkey – Offline private key backup on paper” · View on HN
throw0101cNov 2024Cites it
Recent Veritasium video on the topic, "I used to hate QR codes. But they're actually genius": * ▶ this video
in “Creating a QR Code step by step” · View on HN
Topics & tags
Information theory & signal processingRecreational & visual mathqr codeserror correctionbarcodesveritasiumencoding